EP 0027899 A1 19810506 - Printer subsystem with dual microprocessor control.
Title (en)
Printer subsystem with dual microprocessor control.
Title (de)
Drucker-Teilsystem mit doppelter Mikroprozessorsteuerung.
Title (fr)
Adaptateur d'interface d'imprimante commandé par deux microprocesseurs.
Publication
Application
Priority
- US 8638379 A 19791019
- US 8648479 A 19791019
Abstract (en)
A printer subsystem is interconnected with a host system (1) from which it receives command and data information and to which it provides status information. The printer subsystem has two microprocessors (200, 210), one of which communicates (200) with the host system for transfer of command, data, and status signals and the other of which (210) directly controls the printer unit in the subsystem especially with respect to the print assembly forms feed assembly, ribbon drive assembly, and print wire actuators. Interconnecting means (225, 226, 228) are provided between the first and the second microprocessors to receive command and data signals from the first microprocessor to produce control signals and character image signals for use by the printer unit. Register means (225, 226) between the first and the second microprocessors are accessible by either microprocessor for entry of information pertaining to operation of the printer subsystem and for intercommunication purposes between the two microprocessors.
IPC 1-7
IPC 8 full level
G06F 3/12 (2006.01); G06K 15/10 (2006.01)
CPC (source: EP)
G06F 3/1211 (2013.01); G06F 3/1236 (2013.01); G06F 3/1279 (2013.01); G06F 3/1284 (2013.01); G06K 15/10 (2013.01)
Citation (search report)
- US 4169684 A 19791002 - BLOM NICO [NL]
- US 4179732 A 19791218 - HAM JOHN K [US], et al
- DE 2825185 A1 19790118 - DATAPRODUCTS CORP
- US 3931614 A 19760106 - VASA SURESH LAHERILAL, et al
- US 4074067 A 19780214 - SPECKHARD ARTHUR
- FR 2372703 A1 19780630 - PHILIPS NV [NL]
- US 4096484 A 19780620 - FERRE RADFORD G, et al
- ELEKTRONIK, No. 12, November 1978, page 39, Munich, DE. "TALLY Zeilendrucker T 3300"
- IBM TECHNICAL DISCLOSURE BULLETIN, Vol. 22, No. 1, June 1979, pages 269-271, New York, U.S.A. D.O. HAYS et al.: "Standard printer or I/O adapter control method and apparatus"
- IBM TECHNICAL DISCLOSURE BULLETIN, Vol. 11, No. 2, July 1968, pages 132-133, New York, U.S.A., A.M. PINE: "Typewriter testing device"
Designated contracting state (EPC)
BE CH DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0027899 A1 19810506; EP 0027899 B1 19860108; DE 3071339 D1 19860220
DOCDB simple family (application)
EP 80105774 A 19800925; DE 3071339 T 19800925